ip3 bio topic 2.3 proteins

which element is found in proteins?

• nitrogen
• sodium
• phosphorus
• chlorine

what causes amino acids to differ from one another?

• R-group
• carboxyl group
• amino group
• number of hydrogen atoms bonded to the alpha carbon

what is an amino group?

• -NH2
• -COOH

what are polypeptide chains made of?

• amino acids joined by peptide bonds
• amino acids joined by glycosidic bonds
• amino acids joined by ester bonds
• fatty acids joined by ester bonds

which terminal is the beginning of the polypeptide chain?

• N-terminal
• C-terminal

which structure has more than 1 polypeptide chain involved?

• quaternary
• tertiary
• secondary
• primary

which structure is the variety, number and sequence of amino acids in a polypeptide chain?

• primary
• secondary
• tertiary
• quaternary

what bonds are involved in the primary stage?

• peptide bonds
• hydrogen bonds
• disulfide bonds
• ionic bonds

which bonds are not involved in the tertiary stage?

• peptide bonds
• hydrogen bonds
• ionic bonds
• disulfide bonds

which structure is the localized, repetitive folding of the polypeptide chain?

• secondary
• primary
• tertiary
• quaternary